I don't use pics for contacts, and the choices to use either Random Color bubbles or Action Bar color is not enough. For ex, i created a theme with a bright-colored action bar, this made the contact bubbles REALLY bright and annoying, as were the random color ones. Can't they just be gray(Android's default, unobtrusive choice) and use just the FIRST initial of my contacts (instead of both, which is what you have and is also very distracting).